A refined mass distribution of the cluster MACS J0416.1-2403 from a new large set of spectroscopic multiply lensed sources

被引：112

作者：

Caminha, G. B. ^{[1
]}

Grillo, C. ^{[2
,3
]}

Rosati, P. ^{[1
]}

Balestra, I. ^{[4
,5
]}

Mercurio, A. ^{[6
]}

Vanzella, E. ^{[7
]}

Biviano, A. ^{[5
]}

Caputi, K. I. ^{[8
]}

Delgado-Correal, C. ^{[1
]}

Karman, W. ^{[8
]}

Lombardi, M. ^{[2
]}

Meneghetti, M. ^{[9
]}

Sartoris, B. ^{[10
]}

Tozzi, P. ^{[11
]}

机构：

[1] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44122 Ferrara, Italy

[2] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy

[3] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark

[4] Univ Observ Munich, Scheinerstr 1, D-81679 Munich, Germany

[5] INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34143 Trieste, Italy

[6] INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy

[7] INAF Osservatorio Astron Bologna, Via Ranzani 1, I-40127 Bologna, Italy

[8] Univ Groningen, Kapteyn Astron Inst, Postbus 800, NL-9700 AV Groningen, Netherlands

[9] Ist Nazl Fis Nucl, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy

[10] Univ Trieste, Dipartimento Fis, Via GB Tiepolo 11, I-34143 Trieste, Italy

[11] INAF Osservatorio Astrofis Arcetri, I-50125 Florence, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2017年 / 600卷

关键词：

galaxies: clusters: individual: MACS J0416.1-2403; gravitational lensing: strong; cosmology: observations; HUBBLE-FRONTIER-FIELDS; STRONG-LENSING ANALYSIS; 20 GALAXY CLUSTERS; DARK-MATTER; CLASH-VLT; MAGNIFICATION MAPS; AMPLIFIED SURVEY; GLASS SPECTROSCOPY; FORMING GALAXIES; HIGH-REDSHIFT;

D O I：

10.1051/0004-6361/201629297

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the spectroscopic confirmation of 22 new multiply lensed sources behind the Hubble Frontier Field (HFF) galaxy cluster MACS J0416.1-2403 (MACS 0416), using archival data from the Multi Unit Spectroscopic Explorer (MUSE) on the VLT. Combining with previous spectroscopic measurements of 15 other multiply imaged sources, we have obtained a sample of 102 secure multiple images with measured redshifts, the largest to date in a single strong lensing system. The newly confirmed sources are largely low-luminosity Lyman-alpha emitters with redshift in the range [3.08-6.15]. With such a large number of secure constraints, and a significantly improved sample of galaxy members in the cluster core, we have improved our previous strong lensing model and obtained a robust determination of the projected total mass distribution of MACS 0416. We find evidence of three cored dark-matter halos, adding to the known complexity of this merging system. The total mass density profile, as well as the sub-halo population, are found to be in good agreement with previous works. We update and make public the redshift catalog of MACS 0416 from our previous spectroscopic campaign with the new MUSE redshifts. We also release lensing maps (convergence, shear, magnification) in the standard HFF format.

引用

页数：20

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